diff options
Diffstat (limited to 'nss/nss_files/files-alias.c')
| -rw-r--r-- | nss/nss_files/files-alias.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/nss/nss_files/files-alias.c b/nss/nss_files/files-alias.c index 341e9d4d68..aca89ed73c 100644 --- a/nss/nss_files/files-alias.c +++ b/nss/nss_files/files-alias.c @@ -1,5 +1,5 @@ /* Mail alias file parser in nss_files module. - Copyright (C) 1996 Free Software Foundation, Inc. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -21,6 +21,7 @@ #include <aliases.h> #include <ctype.h> #include <errno.h> +#include <fcntl.h> #include <libc-lock.h> #include <stdlib.h> #include <stdio.h> @@ -48,7 +49,27 @@ internal_setent (void) stream = fopen ("/etc/aliases", "r"); if (stream == NULL) - status = NSS_STATUS_UNAVAIL; + status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL; + else + { + /* We have to make sure the file is `closed on exec'. */ + int result, flags; + + result = flags = fcntl (fileno (stream), F_GETFD, 0); + if (result >= 0) + { + flags |= FD_CLOEXEC; + result = fcntl (fileno (stream), F_SETFD, flags); + } + if (result < 0) + { + /* Something went wrong. Close the stream and return a + failure. */ + fclose (stream); + stream = NULL; + status = NSS_STATUS_UNAVAIL; + } + } } else rewind (stream); |